Why did Columbus call the people he met in the Americans “Indians”

he had thought he reached the Indian Ocean

Explanation:

When he had landed in the Antilles Columbus he had called them “Indians” referring to the fact he had thought he had reached the Indian Ocean

if you could provide the poem below, i'd be happy to you!

explanation:

you didn't give us the poem, or the title of the poem. but it is essential for you to give us that, otherwise we can not detect when the poem has a tonal shift!